diff options
Diffstat (limited to 'services/jni/com_android_server_AssetAtlasService.cpp')
| -rw-r--r-- | services/jni/com_android_server_AssetAtlasService.cpp | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/services/jni/com_android_server_AssetAtlasService.cpp b/services/jni/com_android_server_AssetAtlasService.cpp deleted file mode 100644 index 885d21e..0000000 --- a/services/jni/com_android_server_AssetAtlasService.cpp +++ /dev/null @@ -1,272 +0,0 @@ -/* - * Copyright (C) 2013 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#define LOG_TAG "AssetAtlasService" - -#include "jni.h" -#include "JNIHelp.h" - -#include <android_view_GraphicBuffer.h> -#include <cutils/log.h> - -#include <GLES2/gl2.h> -#include <GLES2/gl2ext.h> - -#include <EGL/egl.h> -#include <EGL/eglext.h> - -#include <SkCanvas.h> -#include <SkBitmap.h> - -namespace android { - -// ---------------------------------------------------------------------------- -// Defines -// ---------------------------------------------------------------------------- - -// Defines how long to wait for the GPU when uploading the atlas -// This timeout is defined in nanoseconds (see EGL_KHR_fence_sync extension) -#define FENCE_TIMEOUT 2000000000 - -// ---------------------------------------------------------------------------- -// JNI Helpers -// ---------------------------------------------------------------------------- - -static struct { - jfieldID mFinalizer; - jfieldID mNativeCanvas; -} gCanvasClassInfo; - -static struct { - jfieldID mNativeCanvas; -} gCanvasFinalizerClassInfo; - -#define GET_INT(object, field) \ - env->GetIntField(object, field) - -#define SET_INT(object, field, value) \ - env->SetIntField(object, field, value) - -// ---------------------------------------------------------------------------- -// Canvas management -// ---------------------------------------------------------------------------- - -static inline void swapCanvasPtr(JNIEnv* env, jobject canvasObj, SkCanvas* newCanvas) { - jobject canvasFinalizerObj = env->GetObjectField(canvasObj, gCanvasClassInfo.mFinalizer); - SkCanvas* previousCanvas = reinterpret_cast<SkCanvas*>( - GET_INT(canvasObj, gCanvasClassInfo.mNativeCanvas)); - SET_INT(canvasObj, gCanvasClassInfo.mNativeCanvas, (int) newCanvas); - SET_INT(canvasFinalizerObj, gCanvasFinalizerClassInfo.mNativeCanvas, (int) newCanvas); - SkSafeUnref(previousCanvas); -} - -static SkBitmap* com_android_server_AssetAtlasService_acquireCanvas(JNIEnv* env, jobject, - jobject canvas, jint width, jint height) { - - SkBitmap* bitmap = new SkBitmap; - bitmap->setConfig(SkBitmap::kARGB_8888_Config, width, height); - bitmap->allocPixels(); - bitmap->eraseColor(0); - - SkCanvas* nativeCanvas = SkNEW_ARGS(SkCanvas, (*bitmap)); - swapCanvasPtr(env, canvas, nativeCanvas); - - return bitmap; -} - -static void com_android_server_AssetAtlasService_releaseCanvas(JNIEnv* env, jobject, - jobject canvas, SkBitmap* bitmap) { - - SkCanvas* nativeCanvas = SkNEW(SkCanvas); - swapCanvasPtr(env, canvas, nativeCanvas); - - delete bitmap; -} - -#define CLEANUP_GL_AND_RETURN(result) \ - if (fence != EGL_NO_SYNC_KHR) eglDestroySyncKHR(display, fence); \ - if (image) eglDestroyImageKHR(display, image); \ - if (texture) glDeleteTextures(1, &texture); \ - if (surface != EGL_NO_SURFACE) eglDestroySurface(display, surface); \ - if (context != EGL_NO_CONTEXT) eglDestroyContext(display, context); \ - eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); \ - eglReleaseThread(); \ - eglTerminate(display); \ - return result; - -static jboolean com_android_server_AssetAtlasService_upload(JNIEnv* env, jobject, - jobject graphicBuffer, SkBitmap* bitmap) { - - // The goal of this method is to copy the bitmap into the GraphicBuffer - // using the GPU to swizzle the texture content - sp<GraphicBuffer> buffer(graphicBufferForJavaObject(env, graphicBuffer)); - - if (buffer != NULL) { - EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY); - if (display == EGL_NO_DISPLAY) return false; - - EGLint major; - EGLint minor; - if (!eglInitialize(display, &major, &minor)) { - ALOGW("Could not initialize EGL"); - return false; - } - - // We're going to use a 1x1 pbuffer surface later on - // The configuration doesn't really matter for what we're trying to do - EGLint configAttrs[] = { - EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, - EGL_RED_SIZE, 8, - EGL_GREEN_SIZE, 8, - EGL_BLUE_SIZE, 8, - EGL_ALPHA_SIZE, 0, - EGL_DEPTH_SIZE, 0, - EGL_STENCIL_SIZE, 0, - EGL_NONE - }; - EGLConfig configs[1]; - EGLint configCount; - if (!eglChooseConfig(display, configAttrs, configs, 1, &configCount)) { - ALOGW("Could not select EGL configuration"); - eglReleaseThread(); - eglTerminate(display); - return false; - } - if (configCount <= 0) { - ALOGW("Could not find EGL configuration"); - eglReleaseThread(); - eglTerminate(display); - return false; - } - - // These objects are initialized below but the default "null" - // values are used to cleanup properly at any point in the - // initialization sequence - GLuint texture = 0; - EGLImageKHR image = EGL_NO_IMAGE_KHR; - EGLSurface surface = EGL_NO_SURFACE; - EGLSyncKHR fence = EGL_NO_SYNC_KHR; - - EGLint attrs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE }; - EGLContext context = eglCreateContext(display, configs[0], EGL_NO_CONTEXT, attrs); - if (context == EGL_NO_CONTEXT) { - ALOGW("Could not create EGL context"); - CLEANUP_GL_AND_RETURN(false); - } - - // Create the 1x1 pbuffer - EGLint surfaceAttrs[] = { EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE }; - surface = eglCreatePbufferSurface(display, configs[0], surfaceAttrs); - if (surface == EGL_NO_SURFACE) { - ALOGW("Could not create EGL surface"); - CLEANUP_GL_AND_RETURN(false); - } - - if (!eglMakeCurrent(display, surface, surface, context)) { - ALOGW("Could not change current EGL context"); - CLEANUP_GL_AND_RETURN(false); - } - - // We use an EGLImage to access the content of the GraphicBuffer - // The EGL image is later bound to a 2D texture - EGLClientBuffer clientBuffer = (EGLClientBuffer) buffer->getNativeBuffer(); - EGLint imageAttrs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE }; - image = eglCreateImageKHR(display, EGL_NO_CONTEXT, - EGL_NATIVE_BUFFER_ANDROID, clientBuffer, imageAttrs); - if (image == EGL_NO_IMAGE_KHR) { - ALOGW("Could not create EGL image"); - CLEANUP_GL_AND_RETURN(false); - } - - glGenTextures(1, &texture); - glBindTexture(GL_TEXTURE_2D, texture); - glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image); - if (glGetError() != GL_NO_ERROR) { - ALOGW("Could not create/bind texture"); - CLEANUP_GL_AND_RETURN(false); - } - - // Upload the content of the bitmap in the GraphicBuffer - glPixelStorei(GL_UNPACK_ALIGNMENT, bitmap->bytesPerPixel()); - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap->width(), bitmap->height(), - GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels()); - if (glGetError() != GL_NO_ERROR) { - ALOGW("Could not upload to texture"); - CLEANUP_GL_AND_RETURN(false); - } - - // The fence is used to wait for the texture upload to finish - // properly. We cannot rely on glFlush() and glFinish() as - // some drivers completely ignore these API calls - fence = eglCreateSyncKHR(display, EGL_SYNC_FENCE_KHR, NULL); - if (fence == EGL_NO_SYNC_KHR) { - ALOGW("Could not create sync fence %#x", eglGetError()); - CLEANUP_GL_AND_RETURN(false); - } - - // The flag EGL_SYNC_FLUSH_COMMANDS_BIT_KHR will trigger a - // pipeline flush (similar to what a glFlush() would do.) - EGLint waitStatus = eglClientWaitSyncKHR(display, fence, - EGL_SYNC_FLUSH_COMMANDS_BIT_KHR, FENCE_TIMEOUT); - if (waitStatus != EGL_CONDITION_SATISFIED_KHR) { - ALOGW("Failed to wait for the fence %#x", eglGetError()); - CLEANUP_GL_AND_RETURN(false); - } - - CLEANUP_GL_AND_RETURN(true); - } - - return false; -} - -// ---------------------------------------------------------------------------- -// JNI Glue -// ---------------------------------------------------------------------------- - -#define FIND_CLASS(var, className) \ - var = env->FindClass(className); \ - LOG_FATAL_IF(! var, "Unable to find class " className); - -#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \ - var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \ - LOG_FATAL_IF(! var, "Unable to find field " fieldName); - -const char* const kClassPathName = "com/android/server/AssetAtlasService"; - -static JNINativeMethod gMethods[] = { - { "nAcquireAtlasCanvas", "(Landroid/graphics/Canvas;II)I", - (void*) com_android_server_AssetAtlasService_acquireCanvas }, - { "nReleaseAtlasCanvas", "(Landroid/graphics/Canvas;I)V", - (void*) com_android_server_AssetAtlasService_releaseCanvas }, - { "nUploadAtlas", "(Landroid/view/GraphicBuffer;I)Z", - (void*) com_android_server_AssetAtlasService_upload }, -}; - -int register_android_server_AssetAtlasService(JNIEnv* env) { - jclass clazz; - - FIND_CLASS(clazz, "android/graphics/Canvas"); - GET_FIELD_ID(gCanvasClassInfo.mFinalizer, clazz, "mFinalizer", - "Landroid/graphics/Canvas$CanvasFinalizer;"); - GET_FIELD_ID(gCanvasClassInfo.mNativeCanvas, clazz, "mNativeCanvas", "I"); - - FIND_CLASS(clazz, "android/graphics/Canvas$CanvasFinalizer"); - GET_FIELD_ID(gCanvasFinalizerClassInfo.mNativeCanvas, clazz, "mNativeCanvas", "I"); - - return jniRegisterNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)); -} - -}; |